<template>
  <div>
    <!-- 面包屑导航区 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="7">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear='getUserList'
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getUserList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button
            type="primary"
            @click="addDialogVisible=true"
          >添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table
        :data="userlist"
        border
        stripe
      >
        <el-table-column
          label="#"
          type="index"
        ></el-table-column>
        <el-table-column
          label="姓名"
          prop="username"
        ></el-table-column>
        <el-table-column
          label="邮箱"
          prop="email"
        ></el-table-column>
        <el-table-column
          label="电话"
          prop="mobile"
        ></el-table-column>
        <el-table-column
          label="角色"
          prop="role_name"
        ></el-table-column>
        <el-table-column
          label="状态"
          prop="mg_state"
        >
          <template v-slot:default="scope">
            <el-switch
              v-model="scope.row.mg_state"
              @change="userStateChanged(scope.row)"
            >
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column
          label="操作"
          width="180px"
        >
          <template v-slot:default="scope">
            <!-- 修改按钮 -->
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
              @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!-- 删除按钮 -->
            <el-button
              type="danger"
              icon="el-icon-delete"
              size="mini"
              @click="removeUserById(scope.row.id)"
            ></el-button>
            <!-- 分配按钮 -->
            <el-tooltip
              effect="dark"
              content="分配角色"
              placement="top"
              :enterable="false"
            >
              <el-button
                type="warning"
                icon="el-icon-setting"
                size="mini"
                @click="setRole(scope.row)"
              ></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      >
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog
      title="添加用户"
      :visible.sync="addDialogVisible"
      @close="addDialogClosed"
      width="50%"
    >

      <!-- 内容主体区域 -->
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="70px"
      >
        <el-form-item
          label="用户名"
          prop="username"
        >
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item
          label="密码"
          prop="password"
        >
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item
          label="邮箱"
          prop="email"
        >
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item
          label="手机"
          prop="mobile"
        >
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 底部区域 -->
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="addUser"
        >确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog
      title="修改用户"
      :visible.sync="editDialogVisible"
      width="50%"
      @close="editDialogClosed"
    >
      <el-form
        :model="editForm"
        :rules="editFormRules"
        ref="editFormRef"
        label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input
            v-model="editForm.username"
            disabled
          ></el-input>
        </el-form-item>
        <el-form-item
          label="邮箱"
          prop="email"
        >
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item
          label="手机号"
          prop="mobile"
        >
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="editUserInfo"
        >确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色的对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="50%" @close="setRoleDialogClosed"
    >
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select
            v-model="selectedRoleId"
            placeholder="请选择"
          >
            <el-option
              v-for="item in rolesList"
              :key="item.id"
              :label="item.roleName"
              :value="item.id"
            >
            </el-option>
          </el-select>
        </p>
      </div>
      <span
        slot="footer"
        class="dialog-footer"
      >
        <el-button @click="dialogVisible = false">取 消</el-button>
        <el-button
          type="primary"
          @click="saveRoleInfo"
        >确 定</el-button>
      </span>
    </el-dialog>

  </div>
</template>

<script>
export default {
    data(){
        //验证邮箱的规则
        var checkEmail = (rule,value,cb) => {
          //验证邮箱的正则表达式
          const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

          if(regEmail.test(value)){
          // 合法的邮箱
          return cb()
          }
          cb(new Error('请输入合法的邮箱'))
        }
        //验证手机号的规则
        var checkMobile = (rule,value,cb) => {
          // 验证手机号的验证表达式
          const regMobile =/^(?:(?:\+|00)86)?1[3-9]\d{9}$/
          if(regMobile.test(value)){
          // 合法的手机号
          return cb()
          }
          cb(new Error('请输入合法的手机号'))
        }
        return{
            // 获取用户列表的参数对象
            queryInfo:{
                query:'',
                // 当前的页数
                pagenum: 1,
                // 当前页面显示多少条页数
                pagesize: 2
            },
            userlist:[],
            total:0,
            // 控制添加用户对话框的显示与隐藏
            addDialogVisible:false,
            //添加用户的表单数据
            addForm:{
              username:'',
              password:'',
              email:'',
              mobile:''
            },
            // 添加表单的验证规则对象
            addFormRules:{
              username:[
                {required:true,message:'请输入用名',trigger:'blur'},
                {min:3,max:10,message:'用户名的长度在3~10个字符之间',
                trigger:'blur'}
              ],
              password:[
                {required:true,message:'请输入密码',trigger:'blur'},
                {min:6,max:15,message:'密码的长度在6~15个字符之间',
                trigger:'blur'}
              ],
              email:[
                {required:true,message:'请输入邮箱',trigger:'blur'},{validator:checkEmail,trigger:'blur'}
              ],
               mobile:[
                {required:true,message:'请输入手机号',trigger:'blur'},{validator:checkMobile,trigger:'blur'}
              ]
            },
            // 控制修改用户对话框的显示与隐藏
            editDialogVisible:false,
            // 查询到的用户信息对象
            editForm:{},
            // 修改表单的验证规则对象
            editFormRules:{
              email:[
                {required:true,message:'请输入用户邮箱',
                trigger:'blur'},
                {validator:checkEmail,trigger:'blur'}
              ],
              mobile:[
                {required:true,message:'请输入用户手机号',
                trigger:'blur'},
                {validator:checkMobile,trigger:'blur'}
              ]
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible:false,
            // 需要被分配角色的用户信息
            userInfo:{},
            // 所有角色的数据列表
            rolesList:[],
            // 已选中的角色ID值
            selectedRoleId:''
        }
    },
    created(){
        this.getUserList()
    },
    methods:{
        async getUserList(){
          const {data:res} = await this.$http.get('users'
          ,{params: this.queryInfo})
          if(res.meta.status !== 200) {
              return this.$message.error('获取用户列表失败！')
              }
          this.userlist = res.data.users
          this.total = res.data.total
          console.log(res)
        },
        //监听 pagesize 改变的事件
        handleSizeChange(newSize){
            //console.log(newSize)
            this.queryInfo.pagesize=newSize
            this.getUserList()
        },
        // 监听页码值改变的事件
        handleCurrentChange(newPage){
           //console.log(newPage)
            this.queryInfo.pagenum=newPage
            this.getUserList()
        },
        // 监听switch状态的改变
        async userStateChanged(userinfo){
          console.log(userinfo)
          const {data:res} = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
          if(res.meta.status !== 200){
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('更新用户状态失败！')
          }
          this.$message.success('更新用户状态成功！')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClosed(){
          this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户
        addUser(){
          this.$refs.addFormRef.validate(async valid => {
            if(!valid) return
            //可以发起添加用户的网络请求
            const {data:res} = await this.$http.post('users',this.addForm)

            if(res.meta.status !==201){
              this.$message.error('添加用户失败！')
            }

            this.$message.success('添加用户成功！')
            // 隐藏添加用户的对话框
            this.addDialogVisible = false
            //重新获取用户列表数据
            this.getUserList()
          })
        },
        // 展示编辑用户的对话框
        async showEditDialog(id){
          //console.log(id)
          const {data:res} = await this.$http.get('users/' + id)
          //this.editDialogVisible = true

          if(res.meta.status !==200){
            return this.$message.error('查询用户信息失败！')
          } 

          this.editForm = res.data
          this.editDialogVisible = true
        },
        //监听修改用户对话框的关闭事件
        editDialogClosed(){
          this.$refs.editFormRef.resetFields()
        },
        //修改用户信息并提交
        editUserInfo(){
          this.$refs.editFormRef.validate(async valid =>{
            if(!valid) return
            // 发起修改用户信息的数据请求
            const {data:res} = await this.$http.put(
              'users/' + this.editForm.id,
            {
              email:this.editForm.email,
              mobile:this.editForm.mobile
              })
              if(res.meta.status!==200){
            return this.$message.error('更新用户信息失败！')
          }

          //关闭对话框
          this.editDialogVisible=false
          // 刷新数据列表
          this.getUserList()
          // 提示修改成功
          this.$message.success('更新用户信息成功！')
          })

          
        },
        // 根据id 删除对应的用户信息
        async removeUserById(id){
          // 弹窗询问用户是否删除数据
          const confirmResult=await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        //如果用户确认删除，则返回值为字符串confirm
        //如果用户取消删除，则返回值为字符串cancel
        //console.log(confirmResult)
        if(confirmResult!='confirm'){
          return this.$message.info('已经取消删除')
        }
        const { data:res}=await this.$http.delete('users/' + id)

        if(res.meta.status !== 200){
          this.$message.error('删除用户失败！')
        }

        this.$message.success('删除用户成功！')
        this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo){
          this.userInfo=userInfo

          // 在展示对话框之前，获取所有的角色列表
          const {data:res}=await this.$http.get('roles')

          if(res.meta.status!==200){
            return this.$message.error('获取角色列表失败！')
          }

          this.rolesList = res.data

          this.setRoleDialogVisible=true
          
        },
        // 点击按钮，分配角色
        async saveRoleInfo(){
          if(!this.selectedRoleId){
            return this.$message.error('请选择要分配的角色！')
          }

          const {data:res}=await this.$http.put(`users/${this.userInfo.id}}/role`,{
            rid:this.selectedRoleId
          })

          if(res.meta.status!==200){
            return this.$message.error('更新用户的角色失败！')
          }

          this.$message.success('更新用户的角色成功！')
          this.getUserList()
          this.setRoleDialogVisible=false
        },
        // 监听角色对话框的关闭事件
        setRoleDialogClosed(){
          this.selectedRoleId=''
          this.userInfo={}
        }
        
    }
}
</script>

<style lang="less" scoped>
</style>
